Reinforced concrete construction for floors, walls, ceilings, and other structures.



M. WADDELL.

REINFORCED CONCRETE CONSTRUCTION FOR FLOORS, WALLS, CEILINGS, AND OTHERSTRUCTURES.

APPLICATION FILED APR. 2, 1908. 926,152.

Patented June 29, 1909.

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MONTGOMERY \\'A.l)l)l$Ll,, 01 NEW IOltli, X. Y. AS51050 01* ONE-HALF TUTHOMAS J. it IAN, U1" NEW YORK, i\'. I.

REINFORCED CONCRETE CONSTRUCTION FOR FLOORS, WALLS, GEILINGS, AND OTHERSTRUCTURES.

1 '0 all whom it may concern:

Be it known that I, MONTGOMERY WAD- DELL, a subject of the King of GreatBritain,

other Structures, of which the following is a specification accompaniedby drawings.

The invention relates particularly to concrete constructions havingsheet metal cores embedded in the concrete for strengthening thecomposite construction.

The object of the present invention is to provide a form of sheet metalreinforcement in such a construction which shall be simple tomanufacture and easy to use, and which at the same time shall bedisposed in the mass or layer of concrete in a manner to be intimatelyunited therewith and to impart great strength thereto.

The invention is particularly well suited for use in concrete structureshaving parallel faces, such as walls or floor spans, but, as will bewell understood by those familiar with the art, it is also applicable toreinforcing arches, domes, and other shapes of concrete construction. Inthe drawings, Figure 1 shows cross section of a portion of a span offloor construction embodying the invention, the section being taken atright angles to the horizontal tension and compression stresses. Fig. 2is a partial longitudinal section of the same on the section line 2-2 ofFig. 1. Fig. 3 is a reduced scale side view of the sheet metalreinforcement showing it made in arched form, but corresponding intransverse section to Fig. 1.

In -Figs. l and 2 a sheet metal reinforcement is shown consisting ofsheet metal bent to form the undulating cross section seen in Fig. l andof length, as measured along the straight line elements of the sheet,sullicient to suit the span between neighboring sup ports. Fig. 2 simplyillustrates one end of a horizontal span resting upon a supportingI-bcam B, the floor being broken away. The sheet metal C is continuousfor the width of the span; but as soon in cross section (Fig. 1) it maybe made up of any number of sheets of desirable width overlappedSpecification of Letters Patent.

Application filed April 2, 1908.

Patented June 29, 1909.

Serial No. 424,822.

at intervals, as indicated at D, there being preferably several of thecomplete undulations in each individual sheet of the metal that is used.The undulating form of cross section shown causes the metal, of what Imay term the crests F and troughs G of the undulations to alternatelyapproach the upper and lower surfaces of the concrete E, E.

The intermediate ortions which lie transversely to the surface of thestructure between the respective crests and troughs converge or inclinetoward each other in a direction toward the bottom of the trough, sothat the troughs or spaces formed between them grow narrower as theyrecede from the respective upper and lower surfaces of the construction.This construction allows easy access in filling in the chan nels withconcretewhen the article is used in concrete structures, and providesfor a gradually increased strength and cross sec tion of the rib ofmaterial'to be laced in the troughs or channels, and also facilitatesthe painting or other treatment of the material of the troughs, wherethe article is so treated for protective or other purposes. Thesetransverse portions of the undulations are corrugated minutely, as at H,and are flat or uncorru ated at their middle or intermediate areasgations accomplish the purpose of locking the mass of concrete withinthe bends or troughs of the undulating sheet metal structure, and forthis reason the minute corrugations H must be abrupt or inclined enoughto prevent the possibilityof the concrete mass being drawn out from thespaces or troughs made by the undulations.

It will be seen. that the corrugations illustrated. extend alternatelyabout forty-five degrees to the perpeiulicular, so that any tendency ofthe lower mass E of the concrete to fall away from the sheet iron isresisted by the upwardly turned faces of the minute corrugations and theconcrete interlocked thereby with the sheet metal. By making the centralportions J of the parts of the undulations that are disposedtransversely to the concrete surfaces of the construction plane insteadof minutely corrugated, less weight of the sheet metal is placed at thisplane of the. structure which corresponds to the neutral axis of thefloor or structure illustrated than at the corru- These minutecorrugated portions where the sheet'metal approaches more nearly.,theupper and lower tral'axis were also corrugated.

In Fig. 3 I have indicated that the sheet I metal may be ciirvedlengthwise of the span without, of course, departing from thecharacteristic cross section at right anglesthereto which I havedescribed.

-It-will be understood that in the case of a Vertical structure like awall or partition, the cross sections shown in Figs. 1 and 2 wouldcorrespond to horizontal sections, whereas in a floor they are Verticalsections, as described. It will also be understood that the shape of theundulations facilitate filling in the concrete either by pouringaor byother methods of a lication well known in the art. It will st' furtherbe seenthat thecross section illustrated in l facilitates thenestinfg-or packing of the metalsheets together r-shipmeiit.

I claim and desire to secure Patent the following: I 1

1'. Reinforced concrete construction for floors,- walls, ceilings, andother structures, havingconcrete and a sheet metal latetor core embeddedin the concrete, said sheet metal plate -having an undulating crosssection formingchannels or troughs, the sides-- of which are inclinedtoward each other in by Letters the direction toward the bottoms of thechannels or troughs and have minute corrugations parallel with thechannels or troughs and are plain or uncorrugated in the Vicinity of thelongitudinal medial line of the said sides.

2. Reinforced concrete construction for floors, walls, ceilings andother structures, having concrete and a' sheet metal plate or coreembedded therein, said sheet metal plate having an undulating crosssection forming channels or troughs, the sides of which have minutecorrugations parallel with the channels or troughs and are plain .oruncorrugated in the vicinity of the longitudinal medial line of the saidsides.

3. Reinforced concrete construction for floors, walls, ceilings, andotherstructures, having concrete and a-sheet metal plate or coreembedded therein, said sheet metal plate having an undulating crosssection forming channels or troughs, the sides of which are plain oruncorrugated in the vicinity of the longitudinal medial line ofthe 'saidsides, and are minutely corrugated at other portions.

EE. V AN ZANDT, ,HERMAN Monms.

In testimony whereof I have signed this specification in the resence of'two SllbSCIlb--

